[clang] [WebAssembly] Change the default linker for `wasm32-wasip2` (PR #84569)

[Sam Clegg via cfe-commits]

https://github.com/sbc100 commented:

Does wasm-component-ld accept any other input types other than the ones that wasm-ld accepts?

Does wasm-component-ld call wasm-ld internally?

Do we expect clang users to be building compound components using a single clang command?  i.e. will they be somehow supplying input files that describe how the componend links?   Would it make more sense to have clang default to building core modules and have the component creation be a higher level thing built on top clang outputs?

https://github.com/llvm/llvm-project/pull/84569